Question: Which sources can be cited to place Roger Bacon's birth in 1219?
Paraphrase: To place For Roger Bacon's birth in 1219, which sources can be cited?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q171677 p:P569 ?s . ?s ps:P569 ?x filter(contains(YEAR(?x),'1219')) . ?s pq:P1480 ?value}